Dust housing



Oct. 19, 1943. w. R. GORMAN 2,332,484

DUST HOUSING Filed May 19, 1941 UNITED STATES iwf-13Nr Patented Oct. 19, 1943 6 Claims.

This invention relates to enclosures for vibrating apparatus such as vibrating screens, feeders, conveyors, sifters, etc.

In enclosed vibrating apparatusr of this type,

y tlne'vibratedy body carries. its housing, which is therefore subjected to` rapid, repeated vibrations. `In some cases, yas. in the vscreeninglor conveying of coal `or or'e, the material beinggtreatedfmay be in `,relatively i large lumps,4 subjecting the` vibrated bodyjand housing to substantial abrasion and repeated impacts." It has ,therefore been found 'necessary to make the housing of relative- '-ly heavy and durable material such'a-s steel plate,

vIn accordan introduced to the screen 4througha feed spout 23 and travelsfrorn thelf'feed, end to the discharge wend. whileeb'eing screened l"on screen cloth r2li, leavesl the ,screen by means of a doubledischarge spout 25.'

ce lthe vpresent invention,` the j heavy steel plate cover of the prioyartis replaced bya relatively light'material such` as fabl ric 22. ymy 'desired'cloth,'or`plastic, or, other plifablesheet material rhaving the characteristic adding appreciably to Athe weight and, costv offthew machine.` itv should be bornelinfmind that any addition to thefweight of the vibrated bodylmay requirea larger mechanism to effect suitable vibration thereof, thereby appreciablyfV increasing thecost of the machine. v yplate must be bolted'on rigidly in forder to keep the-housing dust-tight despite the severe vibration to 'which it is subjected. Such rigid 4fasten- Moreover, such steel j Y toughness 4and yieldabilit'yinherent in clothm'ay be used, transparent orfn'ot. This maybe made `o f a` good grade of. canvas, and mayy consist of central'sheet 2 1, edgesheets 2 8 and 29 and end piece 30,51'` Vflloe 'end of central sheet` 2l may be f fastened lto theend Wall I3 by being retained by the"end Wall vlil rand a"ro`unded`j,ang1e bar `13 2,y `Which isclampedtowall lbymeansfof'bolts k33.1fltis'notezfithat thefedge portion Iofwsheet ff21`is providedvvith slots 34 which permit longiing means makesit diflicult `to open'the housing quickly in order to inspect the condition of"the,;, y

screen cloth or conveying surface:

It is an object of this inventiont provide a housing whichl may be' easily'andV quickly opened fory inspection and 'repair but which remains dusttight during operation.' 1 n Another Vobject vof this invention is to provide a dust-tight housing which Y is light and inexpen- A more specic object is to provide a dust-tight housing of Which at least one Wall, preferably the r top Wall, is made of flexible, pliable or fabric-like material provided With a separable slide fastener.

Other objects of the invention will become apparent from 'the following description taken in connection with the drawing in which:

Fig. 1 is a plan view of a vibrating screen provided With a housing in accordance with this invention;

Fig. 2 is an elevation view Fig. 1; V

Figs. 3, 4 and 5 are enlarged cross sectional views taken on the lines III- III and IV-IV of Fig. l and V-V of Fig. 2,`respectively; and

Fig. 6 is a develop-ed View of the fabric comprising the top Wall of the housing.

The invention is shown as being applied to a screen Il! Which isrsupported from beams l l by means of cables I2. The screen isvibrated by any desired means such as mechanism I3 actuated by a motor i4. The screen l0 is enclosed by bottom plate I6, end plates l1 and 18, side of the screen of the side and edge members 28, 23 and 30 by means As shown in Fig. 1 y

f'j'f'Sheet similarly fastened to angle bar v35 4 adjacent the feed end,v being; clamped between angle bars 32 and 35 by means of bolts33. `Sheet 'nerf "in Fig; 5"- comprises a longitudinal angley bar A3l rmounted on' side plateil and'havingbolted there- 'tudinalradjustment of sheet 21- inor'der to tight Yen it."

3l`is `also provided with slots 34, for' purposes oi `tension adjustment. Edge sheets 28, 29 are attached to side ,plates I3, 20 in anysuitabl-e inanrIkhe particular fasteningv meansillus'trated to a longitudinal flat bar 38. Edge sheet 23 is passed around flat bar 38 and stitched or riveted .as shown at 39. In this way edge sheets28 and 29 are clamped in dust-tight relation with sideplates I3 and 23. with slots 40, so that cover 22 may be tightened transversely.` n 'l The central canvas member 2l is connected to of separable slide fasteners. three separable slide fasteners 4l, 4l and 42 are provided, although vone or more fasteners `may be used as desired. If separable fastenersr are used on all four sides, the central panel may be entirely removed. separable slide fasteners are Well known and need not be described in detail. Th-e mode of attachment is illustrated in Fig. 3, wherein slide fastener 42 comprises interengaging sets of separable members 43 and 4lill carried by endlsheet 30 and central sheet 2l, respectively. Sheets 3l) and 21 are provided with overlapping members 45 beneath slide fastener Angle bar 31 is provided.

y against entry of dirt from within the enclosure.

Central sheet; 21 is further provided with a Wide flap 4'6 which covers the slide fastener and is retained under a longitudinal flap 41 carried by edge sheet 30. In this manner the slide fastener is protected from above and below and can operate in an extremely dusty atmosphere without clogging. Actual usage under severely dusty conditions has indicated that this protection Yis sufficient .to maintain the slide fastener in operable condition.

As indicated in Fig. 5, the slide fastener is arranged in similar fashion at the sides .of the screen cover.

With the construction illustrated, whenever it is desired to inspect the screen, itis only necessary to operate the slide fasteners, which immediately separates the greater part of the central i sheet 21 from its bordering edge sheets', making the screen cloth available for inspection and repair from above. After inspection and ref pair, the central sheet 21 is laid backy inl place,

A body does not affect the canvas cover., Theinyention rprovides not only' a much lighter and less costly cover, but `makes'the screen interior easily and `quickly accessible for inspection and repair.` l

:While the above description relates toa cover on a vibrating screenV housing, it is obvious Athat the construction of the jinvention is'equallyv ,applicable to any wall of the ,housing of any vibrating apparatus. i d

Whilethe invention'has been illustrated as being applied to a screen, itl is obvious that it is equally applicable to feeders, conveyors, sifters and other vibrated bodies. Various modifications apparent to those skilled in the art` and coming within the scope of theappended claims are intended to be included VVwithin the purview of the invention. I Y l It is claimed' and desired to secure byl Letters Patent: Y I i 1. A vibrating body for treatment ofmaterial,Y a housing for said body vibratabletherewith and comprising a cover of flexiblematerial having the characteristic toughness and yieldability 0f cloth extending over at least a part of said body, said cover comprising a peripheral border portion and a central portion, means for fastening said border portion in dust-tight sealing engagement With said body, and quick-detachable means connecting said central portion of said flexible material to said border portion.

' `2. Avibrating bocly,` for" treatment of material, a dust-tight housing for said body supported Wholly by said body and vibratable therewith, said housing comprising side Walls and a ,top cover of flexible material having the characteristic lightness, toughness and pliability of cloth, and such strength and quality as to rel sist abrasion, said. tcp cover extending across a Y substantial partv of said body in such proximity to said body as to be subject to direct impingement by material frequently thrown upwards in the course of said treatment, and quickly detachable means for fastening said flexible mate'- rial in dust-tight sealing relation to said side walls.

3. A vibrating screen comprising a screen body, means for vibratingY said4 body, a dusttight housing for said s'creenbody and vibrated therewith comprisingfrigid side. Walls and a top Wall of flexible material, sai vtopfwallcomprising central `and peripheral portions,` said peripheral portionA being clamped in dust-tightD relation with the upper portions of saidV side Walls,

and a separable slide fastener connecting said peripheral and'4 central-topwall portionsv adjacent at least twoV of saidl side Walls.

4. In ayibrating screen comprising a dust housing surrounding, said screen. and vibrating therewith, a sheet of'flexible material haring central and peripheral portions forming-a. cover fior said dust housing, separable slide fastening ,means connecting lsaidcentral and peripheral portionshand means for clamping said flexibletmaterial to said casing.

5.` In a vibrating screen dust housingas de- ,fined in claim 3, said clamping means-comprising means for adjustably tightening said sheet of exible material on said casing. d f

6. In avibrating screenhousing as defined in vclaim 3, said clamping means comprising a rigid member fastened to one edge ofl said flexible material and means for clamping said rigid member in adjustable position on said casing. WILBUR R. GORMAN. 

